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Finding the Fourth Proportional to 290,489.60, 435,734.40 and 165,843.20

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Solution

The fourth proportional to 290,489.60, 435,734.40 and 165,843.20 is: 248,764.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,489.60 : 435,734.40 = 165,843.20 : x
  2. Step 2: Convert to fraction form
    290,489.60/435,734.40 = 165,843.20/x
  3. Step 3: Cross multiply
    290,489.60x = 435,734.40 × 165,843.20
  4. Step 4: Simplify right side
    290,489.60x = 72,263,587,246.08
  5. Step 5: Solve for x
    x = 72,263,587,246.08/290,489.60
  6. Step 6: Final answer
    x = 248,764.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.